from django.conf import settings
from django.core.mail import send_mail
from meiduo_mall.settings.dev import logger
from celery_tasks.main import celery_app
# bind：保证task对象会作为第一个参数自动传入
# name：异步任务别名
# retry_backoff：异常自动重试的时间间隔 第n次(retry_backoff×2^(n-1))s
# max_retries：异常自动重试次数的上限
@celery_app.task(bind=True, name='send_verify_email', retry_backoff=3)
def send_verify_email(self, to_email, verify_url):
    subject = '美多商城邮箱验证'
    html_message = '<p>尊敬的用户您好!</p>'\
                   '<p>感谢您使用美多商城...</p>'\
                   '<p>您的邮箱为:%s 请点击此连接激活您的邮箱:</p>'\
                   '<p> <a href="%s"> %s </a> </p>' %(to_email, verify_url, verify_url)
    try:
        send_mail(subject, "", settings.EMAIL_FROM, [to_email], html_message=html_message)
    except Exception as e:
        logger.error(e)
        raise self.retry(exc=e, max_retries=3)